/**
 * 
 * @author 梁致远
 * *计算1+2+3+...+99+100的和
 *
 */
public class Cao {

	public static void main(String[] args) {
		int sum = 0;
		for (int i = 1;i <= 100;i++) {
			sum += i;
		}
		System.out.println("sum=" + sum);
		

	}

}
